The water can either be supplied by a pump or under gravity; the latter is the best solution. Sea-water ponds may be filled at high tide.
Channels or pipes can be used to distribute the water from the source to the ponds. If channels are used, gravity flow is necessary. If pumps are used they must eventually lift the water from the source into the distribution channel.
Since the amount of inlet water is normally quite low, the actual design of the inlet pipe is of less interest than for other closed production units. Therefore where and how the inlet water is taken into the pond is less important than for other closed units. If using channels, the inlet from the distribution channel into the pond is just a hatch in a small channel branching from the distribution channel. Water is usually supplied to the ponds continuously, but batch filling is also possible.
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